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Finding the Fourth Proportional to 7,866.54, 11,808 and 3,487.07

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Solution

The fourth proportional to 7,866.54, 11,808 and 3,487.07 is: 5,234.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.54 : 11,808 = 3,487.07 : x
  2. Step 2: Convert to fraction form
    7,866.54/11,808 = 3,487.07/x
  3. Step 3: Cross multiply
    7,866.54x = 11,808 × 3,487.07
  4. Step 4: Simplify right side
    7,866.54x = 41,175,322.56
  5. Step 5: Solve for x
    x = 41,175,322.56/7,866.54
  6. Step 6: Final answer
    x = 5,234.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.